In the 1700s, many sailors on long sea voyages developed a disease called scurvy. Often most of the crew of one ship developed scurvy during the same voyage, so some people thought it passed from one sailor to another.
No microorganism was found in sailors with scurvy. Sailors who were given fresh fruit every day did not develop scurvy.
Explain why scurvy is a non-communicable disease, even though many sailors on the same ship developed it.
112 exam-style questions on Edexcel GCSE Biology 5.1 Health and communicable disease, covering 5.1.1 Communicable and non-communicable diseases, 5.1.2 Disease susceptibility interactions, 5.1.3 Pathogens as disease-causing organisms, 5.1.4 Common infections, 5.1.5 Spread and prevention of pathogens, 5.1.6 Lifecycle of a virus, and 5.1.7 Spread and prevention of STIs. Each one has a worked solution and a mark scheme showing where the marks go.